Abnormal carbene–silicon halide complexes. Issue 14 (25th November 2015) - Wang, Yuzhong
Abstract : Reaction of the anionic NHDC ligand, [:C{[N(2, 6-Pr i 2 C6 H3 )]2 CHCLi}] n (1 ), with SiCl4 gives the trichlorosilyl-substituted NHC ligand (7 ). Abnormal carbene–SiCl4 complex (8 ) can be conveniently synthesized by combining7 with HCl·NEt3 . Meanwhile, 7 may react with CH2 Cl2 in warm hexane, giving the abnormal carbene-complexed SiCl3 + cation (9 ). The structure and bonding of9 have also been probed by DFT computations. Abstract : Reaction of the anionic N-heterocyclic dicarbene (NHDC), [:C{[N(2, 6-Pr i 2 C6 H3 )]2 CHCLi}] n (1 ), with SiCl4 gives the trichlorosilyl-substituted (at the C4 carbon) N-heterocyclic carbene complex (7 ). Abnormal carbene–SiCl4 complex (8 ) may be conveniently synthesized by combining7 with HCl·NEt3 . In addition, 7 may react with CH2 Cl2 in warm hexane, giving the abnormal carbene-complexed SiCl3 + cation (9 ). The nature of the bonding in9 was probed with complementary DFT computations.